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Preparation method for flame-retardant high-strength building seal gum

A sealant, high-strength technology, used in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of poor flame retardant performance, low mechanical strength, and difficulty in meeting building quality requirements, etc. problems, to achieve the effect of improving the utilization rate of specific surface area, mechanical strength, and bonding tightness

Inactive Publication Date: 2018-06-22
常州市绿意管道有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the invention is to provide a flame-retardant high-strength sealant for the defects that the current common building sealants have poor flame-retardant performance, low mechanical strength, must add reinforcing fillers, and are difficult to meet the requirements of building quality. Preparation method of building sealant

Method used

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  • Preparation method for flame-retardant high-strength building seal gum

Examples

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Effect test

example 1

[0024] In parts by weight, take 20 parts of magnesium nitrate, 25 parts of aluminum nitrate, 15 parts of nickel nitrate and 250 parts of deionized water and mix them for 10 minutes to obtain a mixed solution. The ratio is 15:2:1 to obtain the reaction precursor solution after mixing; the reaction precursor solution is packed in the high-pressure hydrothermal kettle, and then in the high-pressure hydrothermal kettle, the potassium thiocyanate and the reaction precursor solution quality 1% of the reaction precursor solution are added 10% tartaric acid solution with a concentration of 0.5mol / L, in a closed high-pressure hydrothermal kettle, heated to 200°C at 0.8MPa, and hydrothermally reacted for 20 hours; after the hydrothermal reaction was completed, filter and separate to obtain the filter residue, and the filter residue and absolute ethanol After mixing according to the mass ratio of 1:20, put it into an ultrasonic oscillator, treat it with 30kHz ultrasonic oscillation for 2 ...

example 2

[0026]In parts by weight, take by weighing 25 parts of magnesium nitrate, 30 parts of aluminum nitrate, 18 parts of nickel nitrate and 280 parts of deionized water and mix them for 13 minutes to obtain a mixed solution. The ratio is 15:2:1 to obtain the reaction precursor solution after mixing; the reaction precursor solution is packed in the high-pressure hydrothermal kettle, and then in the high-pressure hydrothermal kettle, the potassium thiocyanate and the reaction precursor solution quality 1% of the reaction precursor solution are added 10% tartaric acid solution with a concentration of 0.5mol / L, in a closed high-pressure hydrothermal kettle, heated to 210°C at 0.9MPa, and hydrothermally reacted for 22 hours; after the hydrothermal reaction was completed, filter and separate to obtain the filter residue, and the filter residue and absolute ethanol After mixing according to the mass ratio of 1:20, put it into an ultrasonic oscillator, treat it with ultrasonic oscillation a...

example 3

[0028] In parts by weight, take 30 parts of magnesium nitrate, 35 parts of aluminum nitrate, 20 parts of nickel nitrate and 300 parts of deionized water and mix them for 15 minutes to obtain a mixed solution. The ratio is 15:2:1 to obtain the reaction precursor solution after mixing; the reaction precursor solution is packed in the high-pressure hydrothermal kettle, and then in the high-pressure hydrothermal kettle, the potassium thiocyanate and the reaction precursor solution quality 1% of the reaction precursor solution are added 10% tartaric acid solution with a concentration of 0.5mol / L, in a closed high-pressure hydrothermal kettle, heated to 220°C at 1.0MPa, and hydrothermally reacted for 24 hours; after the hydrothermal reaction was completed, filter and separate to obtain the filter residue, and the filter residue and absolute ethanol After mixing according to the mass ratio of 1:20, put it into an ultrasonic oscillator, treat it with 40kHz ultrasonic vibration for 3 ho...

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Abstract

The invention relates to the technical field of preparation of seal gums, and in particular relates to a preparation method for a flame-retardant high-strength building seal gum. Nano-scale hydrotalcite is firstly prepared by a hydrothermal method, potassium thiocyanate and tartaric acid are added while the hydrothermal reaction is performed, under the action of the potassium thiocyanate and the tartaric acid, metal ions in the hydrotalcite leave an original crystal lattice position to enter an organic phase of the tartaric acid, so that holes are generated in the crystal lattice, and the adsorption activity of the hydrotalcite is improved; and hydroxylation modification is performed on the hydrotalcite by using anhydrous ethanol to obtain a self-prepared reinforcing filler, then further modification is performed on the self-prepared reinforcing filler by utilizing organosiloxane and an organic acid, and finally mixing is performed with silicone rubber and other auxiliary materials toprepare the building seal gum. According to the method provided by the invention, smooth immersion of a gum material into abundant pores of the nano-scale hydrotalcite is facilitated, the silicone rubber is easily penetrated and anchored in the pores of the highly-active nano-scale hydrotalcite, the bonding compactness of the silicone rubber and the nano-scale hydrotalcite is improved, and the cohesive energy and mechanical strength of the seal gum are improved.

Description

technical field [0001] The invention relates to the technical field of sealant preparation, in particular to a preparation method of a flame-retardant high-strength building sealant. Background technique [0002] The development of the construction industry has led to the development of new construction products and technologies such as insulating glass, glass curtain walls, exterior wall panels and metal frame structures, thus promoting the rapid increase in the variety and sales of construction sealants. [0003] Building sealants can be mainly divided into silicone type, PU (polyurethane) type, polyacrylate type and polysulfide type, etc. Among them, silicone type and PU type building sealant are the future development direction. Room temperature vulcanizing one-component silicone sealant is stored in an anhydrous state, and is cross-linked and cured by absorbing a small amount of water in the air during use. According to the different types of crosslinking agents, silic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/04C09J11/06C09J11/08
CPCC08K2201/011C08L2201/02C08L2205/025C09J11/04C09J11/06C09J11/08C09J183/04C08L83/04C08K13/06C08K9/06C08K9/04C08K3/26C08K5/544
Inventor 张徐洁林茂兰
Owner 常州市绿意管道有限公司
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